Which statement about XML layouts in Android is correct?

The statement that all TextViews must have a unique id property is accurate because while it’s not mandatory for every TextView to have an id, assigning a unique id to each view is necessary in situations where you need to dynamically interact with or reference those views from your Kotlin or Java code. By giving each TextView a unique id, you can easily manipulate it programmatically, for instance, updating the text displayed or changing its properties based on user interactions or other events.

This helps in managing views efficiently within a layout. Although multiple TextViews can share the same id in XML, doing so can cause confusion and complications when trying to access those views in the activity or fragment, leading to unexpected behavior. Hence, it's considered good practice to provide unique ids for each view that you intend to interact with programmatically.

The other statements do not accurately reflect the properties of XML layouts in Android. For instance, child views do not automatically center within the parent unless specified through layout parameters. String resources can indeed be referenced in XML layouts, and layouts can also be modified dynamically through Kotlin or Java code, making these points less relevant when considering the requirement for unique identifiers for TextViews.